There can be no rest
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More like 500 if we skip the filler and keep good pace unlike the anime which is and has been complete bullshit for close to a decade now.
More like 200 if with fillers you cut on all the bullshit episodes made it to take time, the flashbacks and side-bosses not relevant for the whole story. (I don't believe anyway in more that 50)
Sure, 1000 anime bullshit intact, 500 manga tight, 200 story tight, 50 abridged